Piped Image in email invite

BenjaminL what do you mean by a piped image? Is the image that should be inserted conditional to something that is in person's contact list details?
The mailer has an option to insert images (https://www.qualtrics.com/support/survey-platform/survey-module/editing-questions/rich-content-editor/insert-a-graphic/#Library). The section How to Insert Graphics into Questions step 3 shows you the icon to click in the mailer to add a photo, you can use instructions on the rest of that page to help you tweak the graphic you inserted.
You can also split the distribution into samples (https://www.qualtrics.com/support/iq-directory/lists-tab/creating-mailing-list-samples/) and create a "static" email that has the correct logo(s) inserted using the above process for inserting an image.

Hello bstrahin,
Many thanks for your answer !
Sorry I wasn't clear in my message.
I put in my contact list an embedded data called "Institution_Logo" with the url of my logos from my library. In my email invite, I put "${e://Field/Institution_Logo}"
But doing so, it will display the text of my url and not the picture
Thank you so much if you have the answer !

Many thanks !